Studied by 5 people
disaccharide
2 single sugar molecules bond together
catalyst
a chemical that increases the rate of a reaction but remains unchanged at the end of a reaction
Active site
the area of an enzyme where a substrate will bind.
Substrate
A molecule upon which an enzyme acts.
‘Lock and key’
the model used to describe the binding of specific substrates to specific enzymes.
monosaccharide
a single sugar molecule
polysaccharide
multiple sugar molecules bound together
anabolic
building larger molecules from smaller molecules
catabolic
breaking down larger molecules to smaller
ingestion
process of taking in food
mechanical digestion
the physical act of breaking down the food by non chemical means
chemical digestion
breaking down large, insoluble molecules into smaller, soluble molecules
absorption
movement of digested food molecules through the wall of intestine into the blood/lymph
assimilation
manufacture of new substances in cells using the products of digestion
egestion
removal of undigested food
excretion
removal of metabolic waste in the body
vitamin D deficiency
rickets, causes soft bones
Iron deficiency
anaemia, not enough red blood cells so cells lack oxygen
what are the 7 nutrients?
protein, carbohydrates, lipids, vitamins, minerals, fibre, water
vitamin C deficiency
scurvy
vitamin A deficiency
vision loss and blindness
factors of energy requirements
age, gender, activity, pregenancy/breast feeding
metabolism
sum of all chemical reactions that happen in the body
why does your breathing change when you exercise?
your body needs to respire quicker so you inhale more oxygen and air
what is ATP?
source of energy for use and storage at a cellular level
explain what it is used for
provides enregy needed for processes in orgnisms and cells
anaerobic respiration
the break down of glucose without oxygen
glycosis
where glucose is broken down into smaller molecules. it happens in the cell’s cyptoplasm and produces a small amount of energy
anaeobic respiration equation
Note 
Flashcard (48)